CN203104433U - Wireless communication transceiver - Google Patents
Wireless communication transceiver Download PDFInfo
- Publication number
- CN203104433U CN203104433U CN2012205425678U CN201220542567U CN203104433U CN 203104433 U CN203104433 U CN 203104433U CN 2012205425678 U CN2012205425678 U CN 2012205425678U CN 201220542567 U CN201220542567 U CN 201220542567U CN 203104433 U CN203104433 U CN 203104433U
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- amplifier
- switch
- wireless communication
- amplifier tube
- inductance
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Abstract
The utility model discloses a wireless communication transceiver. The wireless communication transceiver comprises an inductor connected with an antenna; a low noise amplifier whose input end is connected to the inductor, and a power amplifier whose output end is connected to the inductor. The low noise amplifier comprises a first amplifier tube, a first capacitor is connected between a grid electrode of the first amplifier tube and the inductor, a first switch is arranged between a drain electrode of the first amplifier tube and a power supply, and a first bypass capacitor is arranged between the grid electrode and a source electrode of the first amplifier tube; the power amplifier comprises a second amplifier tube, a second switch is arranged between a source electrode of the second amplifier tube and the power supply, a second capacitor is connected between a source electrode of the second amplifier tube and the inductor, and the second capacitor is grounded through a second bypass capacitor; and the first switch and the second switch are turned on or turned off according to control signals. The wireless communication transceiver in the utility model only needs to use one inductor, a duplexer is omitted, and the area and cost of a chip can be effectively reduced.
Description
Technical field
The utility model relates to integrated circuit fields, particularly a kind of wireless communication transceiver.
Background technology
Science and technology have made huge strides along with the mankind of information age, obtains most important and the most basic sensor network technique as information and also obtained great development.Sensor information obtain technology from the unification in past gradually to integrated, microminiaturized, networking and intelligent development, in conjunction with each field cutting edge technology, utilize Modern wireless communication to connect means, a kind of possess that informix communicates by letter with disposal ability and interactive type wireless emerging sensor technology---wireless sensor network has just arisen at the historic moment thus.
Wireless sensor network can cooperate with each other and the information of the various environment of monitoring in real time, perception and collection and monitoring target by all kinds of integrated microsensors, and the information of collecting is handled the mode of back by radio communication send to the terminal use, really realize the mutual of physical environment, information world, human society and merge.Therefore, wireless sensor network has boundless application prospect and huge commercial value.
In the wireless sensor network, the basic module of communication system all is transceiver, the transmitter and receiver circuit of combination just.Transceiver utilize its digital baseband subsystem with digital data coding for baseband signal and with RF carrier signal modulating baseband signal.Therefore, for wireless sensor network, one of most important research field is how to realize the low cost of transceiver.One of low-cost important channel of realizing is to finish required function with minimum chip area, that is to say to make transceiver have minimum components and parts.In traditional transceiver, if the communication of signal is transmitting-receiving asynchronous words (being that the time-division is multiplexing), first module of coupling of antenna must be duplexer so.As shown in Figure 1, Receiver And Transmitter is connected on the shared antenna by duplexer, and the effect of duplexer is to control being connected of transceiver and antenna and whole transceiver chip and is in accepting state and still is in emission state.In traditional radio frequency transceiver system architecture, duplexer module is can't the abridged, and this is because input impedance or the output impedance of transmitter intermediate power amplifier of low noise amplifier all are 50 Ω in the receiver.Therefore, in order to reach impedance matching, must separate with duplexer between antenna, receiver, the transmitter.It is worthy of note that the existence of duplexer has not only increased cost, but also directly influenced the performance of transceiver.For example for receiver, because the existence of duplex will introduce 1 inevitably
～The loss of 2dB, and first module of getting off as antenna, the loss of duplexer will directly cause the noise factor variation 1 of full receiver
～2dB, this influence for whole transceiver is very serious.If substitute with the outer low-loss duplexer of sheet, then can significantly increase the cost of chip again.
Therefore, if can omit duplexer, also can avoid the loss of using duplexer to bring except can significantly being lowered into.In addition, in traditional transceiver, the matching network of transmitter needs an inductance usually, and the matching network of receiver also needs another inductance, because the area of inductance is bigger, uses two inductance to increase area and the cost of entire chip undoubtedly.
The utility model content
Main purpose of the present utility model is to overcome the defective of prior art, provides a kind of volume less wireless communication transceiver.
For reaching above-mentioned purpose, the utility model provides a kind of wireless communication transceiver, comprises inductance, is connected with antenna; Low noise amplifier, its input is connected to described inductance, described low noise amplifier comprises first amplifier tube, be connected with first electric capacity between the grid of described first amplifier tube and described inductance, have first switch between the drain electrode of described first amplifier tube and the power supply, have first shunt capacitance between its grid and the source electrode; And power amplifier, its output is connected to described inductance, and described power amplifier comprises second amplifier tube, has second switch between the source electrode of described second amplifier tube and the power supply, be connected with second electric capacity between its source electrode and the described inductance, and described second electric capacity is through the second shunt capacitance ground connection; Described first switch and described second switch open or close according to control signal.
Further, the source ground of described first amplifier tube.
Further, the grounded drain of described second amplifier tube.
Further, described switch is metal-oxide-semiconductor.
Further, described power amplifier is the E class formation.
Further, described inductance is integrated inductor on the sheet.
Advantage of the present utility model is to have omitted duplexer in transceiver, makes area of chip and cost all significantly reduce, the loss of also having avoided duplexer to bring simultaneously.In addition, only just can satisfy simultaneously by an inductance that input when using as receiver is mated and the output when using as transmitter is mated, further reduce the use of inductance again, reduce the cost of entire chip.
Description of drawings
Fig. 1 is the structural representation of transceiver in the prior art.
Fig. 2 is the structural representation of the utility model one embodiment wireless communication transceiver.
Fig. 3 is the structural representation of the utility model one embodiment wireless communication transceiver accepting state.
Fig. 4 is the structural representation of the utility model one embodiment wireless communication transceiver emission state.
Embodiment
For making content of the present utility model clear more understandable, below in conjunction with Figure of description, content of the present utility model is described further.Certainly the utility model is not limited to this specific embodiment, and the known general replacement of those skilled in the art also is encompassed in the protection range of the present utility model.
At first please refer to Fig. 2, wireless communication transceiver of the present utility model comprises transmitter and receiver and inductance 2, and wherein transmitter comprises power amplifier (PA) 4, and receiver comprises low noise amplifier (LNA) 3, and inductance 2 couples antenna 1.Wherein, power amplifier 4 can adopt the E class formation, and inductance 2 can be integrated inductor on the sheet.The input of low noise amplifier 3 is connected to inductance 2, low noise amplifier 3 comprises first amplifier tube 33, has first electric capacity 31 between the grid of first amplifier tube 33 and the inductance 3, has first switch 34 between the drain electrode of first amplifier tube 33 and the power supply, has first shunt capacitance 32 between its grid and the source electrode, its source ground.First electric capacity 31 can be through first shunt capacitance, 32 ground connection.The output of power amplifier 4 connects inductance 2, comprises between the source electrode of second amplifier tube, 43, the second amplifier tubes 43 and the power supply having second switch 44, is connected with second electric capacity 41, its grounded drain between its source electrode and the inductance 2.Second electric capacity 41 is through second shunt capacitance, 42 ground connection.The output of the input of low noise amplifier 3 and power amplifier 4 all is connected to inductance 2, that is to say the inductance of matching network of low noise amplifier 3 and the same inductance 2 of inductor multiplexing of power amplifier 4 matching networks, therefore reduce the use of an inductance, be conducive to reduce chip cost.In addition, in the present embodiment, first switch 34 and second switch 44 are to control its open and-shut mode by control signal, when control signal controls that first switch 34 cuts out and second switch 44 when opening, transceiver is in accepting state, receives signal from antenna 1, otherwise controls that first switch 34 is opened and second switch 44 when closing when control signal, transceiver is in emission state, transmits to antenna 1.Therefore, switch first switch 34 and second switch 44 by control signal, the Receiver And Transmitter of the utility model transceiver can work alone and not influence each other.
Below will the working method of the utility model wireless communication transceiver be explained in detail.
At first, please refer to Fig. 2 and Fig. 3, the second switch 44 of control signal control power amplifier 4 is opened, first switch 34 of low noise amplifier 3 cuts out, this moment, second amplifier tube 43 of power amplifier 4 disconnected, first amplifier tube, 33 conductings of low noise amplifier, and transceiver is in accepting state.Because second amplifier tube 43 disconnects, second electric capacity 41 and second shunt capacitance, 42 ground connection, and what at this moment see from low noise amplifier 3 inputs to power amplifier 4 is the parasitic capacitance of the equivalent ground connection that is connected into of second electric capacity 41 and second shunt capacitance 42, and this parasitic capacitance hangs over the input end of low noise amplifier 3.Therefore, for low noise amplifier 3, himself electric capacity and this equivalent parasitic capacitances and inductance 2 have been formed the input impedance matching network jointly, therefore the utility model only need be with the selfcapacity (comprising first electric capacity 31 and cross-over connection first shunt capacitance 32 between first amplifier tube, 33 grid sources) of low noise amplifier 3 and the equivalent parasitic capacitances collaborative design of power amplifier 4 in design low noise amplifier input coupling, just can make that the input impedance of low noise amplifier 3 is 50 Ω, thereby just can successfully receive signal from antenna 1.
On the other hand, please refer to Fig. 2 and Fig. 4, it is depicted as the schematic diagram that transceiver is in emission state.The second switch 44 of control signal control power amplifier 4 is closed, and first switch 34 of low noise amplifier 3 is opened, and this moment, first amplifier tube 33 of low noise amplifier 3 disconnected, second amplifier tube, 43 conductings of power amplifier 4, and transceiver is in emission state.Because first amplifier tube 33 disconnects, first electric capacity 31 and first shunt capacitance, 32 ground connection, and what at this moment see from power amplifier 4 outputs to low noise amplifier 3 is the parasitic capacitance of the equivalent ground connection that is connected into of first electric capacity 31 and first shunt capacitance 32, and this equivalent parasitic capacitances hangs over the output of power amplifier 4.Therefore, for power amplifier 4, himself electric capacity and this parasitic capacitance and inductance 2 have been formed output impedance matching networks jointly, therefore the utility model only need be with equivalent parasitic capacitances collaborative design in the selfcapacity of power amplifier 4 and the low noise amplifier 3 in design low noise amplifier output coupling, just can make that the output impedance of power amplifier 4 is 50 Ω, thereby just can successfully transmit to antenna 1.In addition, first switch 31 and second switch 41 all can be MOS transistor, and its grid receives control signal, and according to the control signal conducting or end.For example first switch 31 is the NMOS pipe, and second switch 41 is managed for PMOS, when control signal is high level, and 31 conductings of first switch, second switch 41 ends, thus low noise amplifier 3 work, transceiver is in accepting state.Certainly, control signal also can be divided into first control signal and second control signal, controls first switch 31 and second switch 41 respectively, and the utility model is not limited to this.
In sum, the wireless communication transceiver that the utility model proposes has omitted duplexer, makes area of chip and cost all significantly reduce, the energy loss of also having avoided duplexer to bring simultaneously.In addition, transceiver of the present utility model just can satisfy the input coupling when using as receiver simultaneously by an inductance and the output when using as transmitter is mated, and has further reduced the use of inductance again, has reduced the cost of entire chip.
Though the utility model discloses as above with preferred embodiment; right described many embodiment only give an example for convenience of explanation; be not in order to limit the utility model; those skilled in the art can do some changes and retouching under the prerequisite that does not break away from the utility model spirit and scope, the protection range that the utility model is advocated should be as the criterion so that claims are described.
Claims (6)
1. a wireless communication transceiver is characterized in that, comprising:
Inductance is connected with antenna;
Low noise amplifier, its input is connected to described inductance, described low noise amplifier comprises first amplifier tube, be connected with first electric capacity between the grid of described first amplifier tube and described inductance, have first switch between the drain electrode of described first amplifier tube and the power supply, have first shunt capacitance between its grid and the source electrode; And
Power amplifier, its output is connected to described inductance, and described power amplifier comprises second amplifier tube, has second switch between the source electrode of described second amplifier tube and the power supply, be connected with second electric capacity between its source electrode and the described inductance, and described second electric capacity is through the second shunt capacitance ground connection; Described first switch and described second switch open or close according to control signal.
2. wireless communication transceiver according to claim 1 is characterized in that, the source ground of described first amplifier tube.
3. wireless communication transceiver according to claim 2 is characterized in that, the grounded drain of described second amplifier tube.
4. wireless communication transceiver according to claim 3 is characterized in that, described switch is metal-oxide-semiconductor.
5. wireless communication transceiver according to claim 1 is characterized in that, described power amplifier is the E class formation.
6. wireless communication transceiver according to claim 1 is characterized in that, described inductance is integrated inductor on the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205425678U CN203104433U (en) | 2012-10-22 | 2012-10-22 | Wireless communication transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205425678U CN203104433U (en) | 2012-10-22 | 2012-10-22 | Wireless communication transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104433U true CN203104433U (en) | 2013-07-31 |
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ID=48855805
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205425678U Expired - Lifetime CN203104433U (en) | 2012-10-22 | 2012-10-22 | Wireless communication transceiver |
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| CN (1) | CN203104433U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634532A (en) * | 2014-10-31 | 2016-06-01 | 展讯通信（上海）有限公司 | Signal transmit-receive device |
| CN106470028A (en) * | 2015-08-20 | 2017-03-01 | 大唐半导体设计有限公司 | A kind of high frequency transmit-receive switch integrated approach and device |
| CN107566009A (en) * | 2017-08-11 | 2018-01-09 | 苏州威发半导体有限公司 | TDD radio communication system front-end circuit |
| CN109120236A (en) * | 2018-11-05 | 2019-01-01 | 上海艾为电子技术股份有限公司 | Gain circuitry |
| CN109257041A (en) * | 2018-11-05 | 2019-01-22 | 上海艾为电子技术股份有限公司 | control circuit and control method |
| CN109412537A (en) * | 2017-08-15 | 2019-03-01 | 诺基亚通信公司 | Low-noise amplifier protection |
| CN110474657A (en) * | 2019-09-25 | 2019-11-19 | 大唐半导体科技有限公司 | A kind of high frequency transmit-receive switch integrated circuit and its method |
| CN111342860A (en) * | 2019-12-25 | 2020-06-26 | 中科威发半导体（苏州）有限公司 | Radio frequency transmit-receive switch integrated circuit and transmit-receive method |
| CN112187230A (en) * | 2016-08-10 | 2021-01-05 | 株式会社村田制作所 | Switching circuit, high-frequency module, and communication device |
-
2012
- 2012-10-22 CN CN2012205425678U patent/CN203104433U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634532A (en) * | 2014-10-31 | 2016-06-01 | 展讯通信（上海）有限公司 | Signal transmit-receive device |
| CN106470028A (en) * | 2015-08-20 | 2017-03-01 | 大唐半导体设计有限公司 | A kind of high frequency transmit-receive switch integrated approach and device |
| CN106470028B (en) * | 2015-08-20 | 2019-04-12 | 大唐半导体设计有限公司 | A kind of high frequency transmit-receive switch integrated approach and device |
| CN112187230A (en) * | 2016-08-10 | 2021-01-05 | 株式会社村田制作所 | Switching circuit, high-frequency module, and communication device |
| CN107566009A (en) * | 2017-08-11 | 2018-01-09 | 苏州威发半导体有限公司 | TDD radio communication system front-end circuit |
| CN109412537A (en) * | 2017-08-15 | 2019-03-01 | 诺基亚通信公司 | Low-noise amplifier protection |
| CN109412537B (en) * | 2017-08-15 | 2022-10-14 | 诺基亚通信公司 | Low noise amplifier protection |
| CN109120236A (en) * | 2018-11-05 | 2019-01-01 | 上海艾为电子技术股份有限公司 | Gain circuitry |
| CN109257041A (en) * | 2018-11-05 | 2019-01-22 | 上海艾为电子技术股份有限公司 | control circuit and control method |
| CN110474657A (en) * | 2019-09-25 | 2019-11-19 | 大唐半导体科技有限公司 | A kind of high frequency transmit-receive switch integrated circuit and its method |
| CN110474657B (en) * | 2019-09-25 | 2021-12-31 | 大唐半导体科技有限公司 | High-frequency transceiving switch integrated circuit and method thereof |
| CN111342860A (en) * | 2019-12-25 | 2020-06-26 | 中科威发半导体（苏州）有限公司 | Radio frequency transmit-receive switch integrated circuit and transmit-receive method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |